Prop Rotation
 

Hi all,
I am new to this hobby and just wondering wich way the prop has to rotate when you start the engine? Clockwise ?
Thanks, Ralf

RE: Prop Rotation
 

Looking at prop from in front of the plane it should rotate counter-clockwise.

Ken

RE: Prop Rotation
 

Thanks Ken

RE: Prop Rotation
 

Just a suplement to Ken's comment. It is possible for a two stroke motor to start backwards since there is no valve train. This seems to happen more on cold days. It is not easy to see if this has occurred, but if you stand behind the motor and don't feel air blowing at you shut it down and try again.

RE: Prop Rotation
 

The biggest reason a 2-stroke will run backwards is trying to start a flooded engine.

4-stroke engines with valves can and do run backwards also.

Ken

RE: Prop Rotation
 

When hand-starting, a couple of my two-strokes will regularly start backwards. I'm one of those ludites who starts by flipping through the compression, rather than against it. Usually with a blip or two of the throttle one of them will flip around, but the other generally requires me to shut it down. There's nothing unusual about a two-stroke starting up backwards. :)

If you're using a starter, however, that should never happen.